February 27, 2007

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Products Affected

Products Affected

Comments

CiscoWorks SIMS - 3.4.1 LINUX

and earlier

CiscoWorks SIMS - 3.4.1 SOLARIS

and earlier

Problem Description

New U.S. Daylight Savings Times rules go into effect in March 2007. Consequently, customers whose network components rely on the default U.S. clock settings will be affected by the following problem.

For operating systems that have not been updated with the new U.S. DST policy changes, timestamps will exhibit a one hour time clock offset lasting three weeks beginning at 2 A.M. on the second Sunday in March of 2007. They will also exhibit a one hour time clock offset lasting one week beginning at 2 A.M. on the first Sunday in November.

Any time-dependent applications not running the upgraded version of software will be affected by this problem.

Background

On August 8, 2005, President Bush signed into law the Energy Policy Act, which extends DST by four weeks from the second Sunday of March to the first Sunday of November. The Secretary of Energy will report the impact of this change to Congress, and then Congress retains the right to resume the 2005 DST schedule once the Department of Energy study is complete. This law takes effect on March 1, 2007.

Event

Prior to 2007

Year 2007 and After

Start

First Sunday in April

Second Sunday in March

End

Last Sunday in October

First Sunday in November

The Energy Policy Act of 2005, bill number H.R.6.ENR, can be found at The Library of Congress, THOMAS. Search for "daylight savings" to find the Act in various stages.

Problem Symptoms

The CiscoWorks SIMS will display the incorrect U.S. local time when the new U.S. Daylight Savings Time begins.

Workaround/Solution

Solution:

Download and apply CWSIMS-3.3.1-JavaDST-Update.zip on CWSIMS 3.3.1 or later. Customers running 3.3.1 or later can immediately apply the patch.

Customers running a software release prior to 3.3.1 must first upgrade to 3.3.1 before applying the patch. To order or purchase the upgrade software, contact your local Product Sales Specialist or use your active Service Application Support (SAS) contract to request shipping of the upgrade software via the CCO Product Upgrade Tool (registered customers only) . If needed further assistance, please contact the Cisco Technical Assistance Center (TAC).